Improvement in piano-forte insulators



C. VIGNERU'N.

Piano-Forte Insulators.

NO.I50,H2. Patented Apri|21,1874.

W|TNESSES| F INVENTOR- UNITED STATES PATENT OFFICE,

CHARLES VIGNERON, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN PlANQ-FORTE INSULATORS.

Specification forming part of Letters Patent No. 150,11 2, dated April:21, 1874; application filed March 11, 1874.

To all whom it may concern:

Be it known that I, CHARLES VIGNERON, of

the city and county of Providence, in the State of Rhode Island, haveinvented a new Piano- Insulator; and I do hereby declare that thefollowing specification, taken in connection with the drawings making apart of the same, is a full, clear, and exact description thereof.

Figure 1 is a view in perspective. Fig. 2 is a view in cross-section.'

It is a well-known fact that the notes of a music-box, when supportedupon glass tumblers, will be given forth with a much clearer and moreringing sound than if the box be set upon a carpeted floor.

The object of my invention is to provide a means for giving a similarimproved effect to the notes of a piano-forte, melodeon, or othersimilar instrument.

A is a block of glass, sufficiently thick and strong to sustain onecorner of the instrument which it is to support. It is molded with acavity, B, in its upper face large enough to re ceive the foot of thepiano-leg without coming, in any part, into contact with the wood, andsupport the caster properly, as seen at Fig. 2. The under side of theinsulator should also be made with a central cavity, D, Fig. 2, so thatthe bottom of the insulator will be in contact with the carpet only atits edge a I), or otherwise, so that, by means of legs, the continuousconnection of the piano-leg with the floor will be broken. I also breakthe continuity of the upper surface of the insulator by cutting a numberof slits, c, transversely through its rim, as shown at Fig. 1.

If an insulator of this character be placed under each of the legs of apiano-forte, it will be found that the tone of the instrument is greatlyimproved. While glass is decidedly the best material for the purpose, avery excellent effect will be obtained from the use of similarinsulators made of mineral composition, earthenware, metal, or even hardwood.

WVhat I claim as my invention, and desire to secure by Letters Patent,is-

An insulator for piano-fortes and other heavy musical instruments, madewith a re cess, B, to receive the foot of the leg of the instrument, theslits c, and a cavity or recess, D, upon the under side to break directconnection with the floor, substantially as described.

CHARLES VIGNERON.

Witnesses O. L. Boswon'rn, THOMAS-F. Cosenovn.

